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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">convert_image_type</span><span data-if="c" style="display:none;">convert_image_type</span><span data-if="cpp" style="display:none;">ConvertImageType</span><span data-if="dotnet" style="display:none;">ConvertImageType</span><span data-if="python" style="display:none;">convert_image_type</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">convert_image_type</span><span data-if="c" style="display:none;">convert_image_type</span><span data-if="cpp" style="display:none;">ConvertImageType</span><span data-if="dotnet" style="display:none;">ConvertImageType</span><span data-if="python" style="display:none;">convert_image_type</span></code> — Convert the type of an image.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>convert_image_type</b>(<a href="#Image"><i>Image</i></a> : <a href="#ImageConverted"><i>ImageConverted</i></a> : <a href="#NewType"><i>NewType</i></a> : )</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>convert_image_type</b>(const Hobject <a href="#Image"><i>Image</i></a>, Hobject* <a href="#ImageConverted"><i>ImageConverted</i></a>, const char* <a href="#NewType"><i>NewType</i></a>)</code></p>
<p>
<code>Herror <b>T_convert_image_type</b>(const Hobject <a href="#Image"><i>Image</i></a>, Hobject* <a href="#ImageConverted"><i>ImageConverted</i></a>, const Htuple <a href="#NewType"><i>NewType</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>ConvertImageType</b>(const HObject&amp; <a href="#Image"><i>Image</i></a>, HObject* <a href="#ImageConverted"><i>ImageConverted</i></a>, const HTuple&amp; <a href="#NewType"><i>NewType</i></a>)</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>::<b>ConvertImageType</b>(const HString&amp; <a href="#NewType"><i>NewType</i></a>) const</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>::<b>ConvertImageType</b>(const char* <a href="#NewType"><i>NewType</i></a>) const</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>::<b>ConvertImageType</b>(const wchar_t* <a href="#NewType"><i>NewType</i></a>) const  <span class="signnote">
            (
            Windows only)
          </span></code></p>
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<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>ConvertImageType</b>(<a href="HObject.html">HObject</a> <a href="#Image"><i>image</i></a>, out <a href="HObject.html">HObject</a> <a href="#ImageConverted"><i>imageConverted</i></a>, <a href="HTuple.html">HTuple</a> <a href="#NewType"><i>newType</i></a>)</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>.<b>ConvertImageType</b>(string <a href="#NewType"><i>newType</i></a>)</code></p>
</div>
<div data-if="python" style="display:none;">
<p>
<code>def <b>convert_image_type</b>(<a href="#Image"><i>image</i></a>: HObject, <a href="#NewType"><i>new_type</i></a>: str) -&gt; HObject</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p><code><span data-if="hdevelop" style="display:inline">convert_image_type</span><span data-if="c" style="display:none">convert_image_type</span><span data-if="cpp" style="display:none">ConvertImageType</span><span data-if="com" style="display:none">ConvertImageType</span><span data-if="dotnet" style="display:none">ConvertImageType</span><span data-if="python" style="display:none">convert_image_type</span></code> converts images of an arbitrary
type into an arbitrary new image type.  If the conversion is done
from a larger to a smaller gray value range (e.g., from 'int4' to
'byte'), too large or too small values are simply “clipped”.
If the result images are of type 'direction', gray values that
are not in the value range that is valid for 'direction' images
are set to the value 255 to mark them as invalid.  It
is therefore advisable to adapt the range of gray values by calling
<a href="scale_image.html"><code><span data-if="hdevelop" style="display:inline">scale_image</span><span data-if="c" style="display:none">scale_image</span><span data-if="cpp" style="display:none">ScaleImage</span><span data-if="com" style="display:none">ScaleImage</span><span data-if="dotnet" style="display:none">ScaleImage</span><span data-if="python" style="display:none">scale_image</span></code></a> before calling this operator.  For images of
type complex, only the real part is converted.  The imaginary part
is ignored.  This facilitates an efficient conversion of images that
have been transformed back from the frequency domain.  Such images
always have an imaginary part of 0.</p>
<h2 id="sec_attention">注意</h2>
<p>The conversion to the 'int8' image format is only available on 64 bit
systems!
If the source and destination image type are identical, no new image
matrix is allocated.</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
    
      <li>支持OpenCL计算设备。</li>
    
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  
    <li>在元组级别自动并行化。</li>
    <li>在图像通道级别自动并行化。</li>
    <li>Automatically parallelized on  domain level.</li>
  
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="Image" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></b> (input_object)  </span><span>(multichannel-)image(-array) <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject</span> (byte* / direction* / cyclic* / int1* / int2* / uint2* / int4* / int8 / real* / complex*)<i> *allowed for compute devices</i></span>
</div>
<p class="pardesc">Image whose image type is to be changed.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="ImageConverted" class="parname"><b><code><span data-if="hdevelop" style="display:inline">ImageConverted</span><span data-if="c" style="display:none">ImageConverted</span><span data-if="cpp" style="display:none">ImageConverted</span><span data-if="com" style="display:none">ImageConverted</span><span data-if="dotnet" style="display:none">imageConverted</span><span data-if="python" style="display:none">image_converted</span></code></b> (output_object)  </span><span>(multichannel-)image(-array) <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject *</span> (byte* / direction* / cyclic* / int1* / int2* / uint2* / int4* / int8 / real* / complex*)<i> *allowed for compute devices</i></span>
</div>
<p class="pardesc">Converted image.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="NewType" class="parname"><b><code><span data-if="hdevelop" style="display:inline">NewType</span><span data-if="c" style="display:none">NewType</span><span data-if="cpp" style="display:none">NewType</span><span data-if="com" style="display:none">NewType</span><span data-if="dotnet" style="display:none">newType</span><span data-if="python" style="display:none">new_type</span></code></b> (input_control)  </span><span>string <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">str</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string)</span><span data-if="dotnet" style="display:none"> (<i>string</i>)</span><span data-if="cpp" style="display:none"> (<i>HString</i>)</span><span data-if="c" style="display:none"> (<i>char*</i>)</span></span>
</div>
<p class="pardesc">Desired image type (i.e., type of the gray values).</p>
<p class="pardesc"><span class="parcat">Default:
      </span>
    <span data-if="hdevelop" style="display:inline">'byte'</span>
    <span data-if="c" style="display:none">"byte"</span>
    <span data-if="cpp" style="display:none">"byte"</span>
    <span data-if="com" style="display:none">"byte"</span>
    <span data-if="dotnet" style="display:none">"byte"</span>
    <span data-if="python" style="display:none">"byte"</span>
</p>
<p class="pardesc"><span class="parcat">List of values:
      </span><span data-if="hdevelop" style="display:inline">'byte'</span><span data-if="c" style="display:none">"byte"</span><span data-if="cpp" style="display:none">"byte"</span><span data-if="com" style="display:none">"byte"</span><span data-if="dotnet" style="display:none">"byte"</span><span data-if="python" style="display:none">"byte"</span>, <span data-if="hdevelop" style="display:inline">'complex'</span><span data-if="c" style="display:none">"complex"</span><span data-if="cpp" style="display:none">"complex"</span><span data-if="com" style="display:none">"complex"</span><span data-if="dotnet" style="display:none">"complex"</span><span data-if="python" style="display:none">"complex"</span>, <span data-if="hdevelop" style="display:inline">'cyclic'</span><span data-if="c" style="display:none">"cyclic"</span><span data-if="cpp" style="display:none">"cyclic"</span><span data-if="com" style="display:none">"cyclic"</span><span data-if="dotnet" style="display:none">"cyclic"</span><span data-if="python" style="display:none">"cyclic"</span>, <span data-if="hdevelop" style="display:inline">'direction'</span><span data-if="c" style="display:none">"direction"</span><span data-if="cpp" style="display:none">"direction"</span><span data-if="com" style="display:none">"direction"</span><span data-if="dotnet" style="display:none">"direction"</span><span data-if="python" style="display:none">"direction"</span>, <span data-if="hdevelop" style="display:inline">'int1'</span><span data-if="c" style="display:none">"int1"</span><span data-if="cpp" style="display:none">"int1"</span><span data-if="com" style="display:none">"int1"</span><span data-if="dotnet" style="display:none">"int1"</span><span data-if="python" style="display:none">"int1"</span>, <span data-if="hdevelop" style="display:inline">'int2'</span><span data-if="c" style="display:none">"int2"</span><span data-if="cpp" style="display:none">"int2"</span><span data-if="com" style="display:none">"int2"</span><span data-if="dotnet" style="display:none">"int2"</span><span data-if="python" style="display:none">"int2"</span>, <span data-if="hdevelop" style="display:inline">'int4'</span><span data-if="c" style="display:none">"int4"</span><span data-if="cpp" style="display:none">"int4"</span><span data-if="com" style="display:none">"int4"</span><span data-if="dotnet" style="display:none">"int4"</span><span data-if="python" style="display:none">"int4"</span>, <span data-if="hdevelop" style="display:inline">'int8'</span><span data-if="c" style="display:none">"int8"</span><span data-if="cpp" style="display:none">"int8"</span><span data-if="com" style="display:none">"int8"</span><span data-if="dotnet" style="display:none">"int8"</span><span data-if="python" style="display:none">"int8"</span>, <span data-if="hdevelop" style="display:inline">'real'</span><span data-if="c" style="display:none">"real"</span><span data-if="cpp" style="display:none">"real"</span><span data-if="com" style="display:none">"real"</span><span data-if="dotnet" style="display:none">"real"</span><span data-if="python" style="display:none">"real"</span>, <span data-if="hdevelop" style="display:inline">'uint2'</span><span data-if="c" style="display:none">"uint2"</span><span data-if="cpp" style="display:none">"uint2"</span><span data-if="com" style="display:none">"uint2"</span><span data-if="dotnet" style="display:none">"uint2"</span><span data-if="python" style="display:none">"uint2"</span></p>
<p class="pardesc"><span class="parcat">List of values (for compute devices):
      </span><span data-if="hdevelop" style="display:inline">'int1'</span><span data-if="c" style="display:none">"int1"</span><span data-if="cpp" style="display:none">"int1"</span><span data-if="com" style="display:none">"int1"</span><span data-if="dotnet" style="display:none">"int1"</span><span data-if="python" style="display:none">"int1"</span>, <span data-if="hdevelop" style="display:inline">'int2'</span><span data-if="c" style="display:none">"int2"</span><span data-if="cpp" style="display:none">"int2"</span><span data-if="com" style="display:none">"int2"</span><span data-if="dotnet" style="display:none">"int2"</span><span data-if="python" style="display:none">"int2"</span>, <span data-if="hdevelop" style="display:inline">'uint2'</span><span data-if="c" style="display:none">"uint2"</span><span data-if="cpp" style="display:none">"uint2"</span><span data-if="com" style="display:none">"uint2"</span><span data-if="dotnet" style="display:none">"uint2"</span><span data-if="python" style="display:none">"uint2"</span>, <span data-if="hdevelop" style="display:inline">'int4'</span><span data-if="c" style="display:none">"int4"</span><span data-if="cpp" style="display:none">"int4"</span><span data-if="com" style="display:none">"int4"</span><span data-if="dotnet" style="display:none">"int4"</span><span data-if="python" style="display:none">"int4"</span>, <span data-if="hdevelop" style="display:inline">'byte'</span><span data-if="c" style="display:none">"byte"</span><span data-if="cpp" style="display:none">"byte"</span><span data-if="com" style="display:none">"byte"</span><span data-if="dotnet" style="display:none">"byte"</span><span data-if="python" style="display:none">"byte"</span>, <span data-if="hdevelop" style="display:inline">'real'</span><span data-if="c" style="display:none">"real"</span><span data-if="cpp" style="display:none">"real"</span><span data-if="com" style="display:none">"real"</span><span data-if="dotnet" style="display:none">"real"</span><span data-if="python" style="display:none">"real"</span>, <span data-if="hdevelop" style="display:inline">'direction'</span><span data-if="c" style="display:none">"direction"</span><span data-if="cpp" style="display:none">"direction"</span><span data-if="com" style="display:none">"direction"</span><span data-if="dotnet" style="display:none">"direction"</span><span data-if="python" style="display:none">"direction"</span>, <span data-if="hdevelop" style="display:inline">'cyclic'</span><span data-if="c" style="display:none">"cyclic"</span><span data-if="cpp" style="display:none">"cyclic"</span><span data-if="com" style="display:none">"cyclic"</span><span data-if="dotnet" style="display:none">"cyclic"</span><span data-if="python" style="display:none">"cyclic"</span>, <span data-if="hdevelop" style="display:inline">'complex'</span><span data-if="c" style="display:none">"complex"</span><span data-if="cpp" style="display:none">"complex"</span><span data-if="com" style="display:none">"complex"</span><span data-if="dotnet" style="display:none">"complex"</span><span data-if="python" style="display:none">"complex"</span></p>
</div>
<h2 id="sec_result">结果</h2>
<p><code><span data-if="hdevelop" style="display:inline">convert_image_type</span><span data-if="c" style="display:none">convert_image_type</span><span data-if="cpp" style="display:none">ConvertImageType</span><span data-if="com" style="display:none">ConvertImageType</span><span data-if="dotnet" style="display:none">ConvertImageType</span><span data-if="python" style="display:none">convert_image_type</span></code> returns <TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
     if all parameters are
correct.  If the input is empty the behavior can be set via
<a href="set_system.html"><code><span data-if="hdevelop" style="display:inline">set_system('no_object_result',&lt;Result&gt;)</span><span data-if="c" style="display:none">set_system("no_object_result",&lt;Result&gt;)</span><span data-if="cpp" style="display:none">SetSystem("no_object_result",&lt;Result&gt;)</span><span data-if="com" style="display:none">SetSystem("no_object_result",&lt;Result&gt;)</span><span data-if="dotnet" style="display:none">SetSystem("no_object_result",&lt;Result&gt;)</span><span data-if="python" style="display:none">set_system("no_object_result",&lt;Result&gt;)</span></code></a>.
如有必要，将引发异常。</p>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="scale_image.html"><span data-if="hdevelop" style="display:inline">scale_image</span><span data-if="c" style="display:none">scale_image</span><span data-if="cpp" style="display:none">ScaleImage</span><span data-if="com" style="display:none">ScaleImage</span><span data-if="dotnet" style="display:none">ScaleImage</span><span data-if="python" style="display:none">scale_image</span></a></code>
</p>
<h2 id="sec_see">参考其它</h2>
<p>
<code><a href="scale_image.html"><span data-if="hdevelop" style="display:inline">scale_image</span><span data-if="c" style="display:none">scale_image</span><span data-if="cpp" style="display:none">ScaleImage</span><span data-if="com" style="display:none">ScaleImage</span><span data-if="dotnet" style="display:none">ScaleImage</span><span data-if="python" style="display:none">scale_image</span></a></code>, 
<code><a href="abs_image.html"><span data-if="hdevelop" style="display:inline">abs_image</span><span data-if="c" style="display:none">abs_image</span><span data-if="cpp" style="display:none">AbsImage</span><span data-if="com" style="display:none">AbsImage</span><span data-if="dotnet" style="display:none">AbsImage</span><span data-if="python" style="display:none">abs_image</span></a></code>
</p>
<h2 id="sec_module">模块</h2>
<p>
Foundation</p>
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